57536021 has 8 divisors (see below), whose sum is σ = 59141280. Its totient is φ = 55942992.

The previous prime is 57535981. The next prime is 57536053. The reversal of 57536021 is 12063575.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57536021 - 2⁶ = 57535957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57536081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6926 + ... + 12768.

It is an arithmetic number, because the mean of its divisors is an integer number (7392660).

Almost surely, 2^57536021 is an apocalyptic number.

It is an amenable number.

57536021 is a deficient number, since it is larger than the sum of its proper divisors (1605259).

57536021 is a wasteful number, since it uses less digits than its factorization.

57536021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 57536021 is about 7585.2502265911. The cubic root of 57536021 is about 386.0527123373.

Adding to 57536021 its reverse (12063575), we get a palindrome (69599596).

The spelling of 57536021 in words is "fifty-seven million, five hundred thirty-six thousand, twenty-one".